NASHVILLE, Tenn. —Derrick Henry showed up for his first day in the NFL wearing a t-shirt with the words "Natural Born Baller" across the front.

A backpack hung from the shoulders of the hulking Heisman Trophy winner as he walked into Saint Thomas Sports Park. He's now a member of the Tennessee Titans, with plenty to prove.

He left memories of his record-breaking days at Alabama at the door.

"That was in college,'' Henry said on Monday. "I just want to prove myself and earn respect now that I am here. It's a fresh start. I have to come from the bottom and work my way up."

Henry, one of the team's three second-round draft picks, has already had a busy day.

The running back signed his contract with the Titans this morning, and then attended a flurry of meetings. All of the team's rookies — draft picks and undrafted free agents — reported for the offseason program today. They'll take part in a rookie minicamp later in the week, starting on Friday.

Henry spent time Sunday night with Titans fullback Jalston Fowler, his former teammate at Alabama.

"Everyone has been welcoming, the players and the coaches, and all of us rookies are ready to be here,'' Henry said. "I am taking it all in, and enjoying it...After breakfast this morning, some of the coaches said hello, then we got our physicals and went into the equipment room. We've had some meetings so far. So it has been good.

"I am just ready to get started. I am excited to be here, and excited to be a part of this organization. Now, I'm ready to work and ready to do my part."

Henry, selected 45th overall in the draft, said the night the Titans picked him he was motivated after seeing so many players go in front of him.

Since, he's heard from Titans quarterback Marcus Mariota, who welcomed him to the team. Henry chatted with offensive coordinator Terry Robiskie on Monday, and attended a meeting led by coach Mike Mularkey.

He looks forward to meeting veteran running back DeMarco Murray, who complimented Henry last week during an appearance on the Titans Caravan.

"I have heard a lot of great things about (Henry),'' Murray said. "He's a great kid. I am excited to work with him. Obviously we have a lot of other running backs, too, I have gotten a chance to know. But I think Derrick coming in will push everybody, and I think it is only going to help the team.  I am excited to have him and I want to teach him as much as I can and hopefully I can learn from him."

Henry said he's ready to do his part.

In 2015, Henry racked up 2,219 yards and 28 touchdowns while guiding the Crimson Tide to the national championship.

In three seasons at Alabama, Henry ran for 3,591 yards and 42 touchdowns while averaging 87.6 yards per game.

"I am very motivated, and ready to get to work,'' Henry said. "Being here, it's great. I am just ready to get to work and help this organization win some games. I'm ready to get rolling."